What happens when you try to import? If there is an error message, please tell us the complete error message word for word, verbatim.
Are those standard 8 bit jpgs? Will other applications display them? My Silverfast scanning software, if it is set for 16 bit scans but the save format is jpg, will write 12 bit jpgs that few other applications can handle. If this is the case, save the scans as 16 bit tifs and if you really want jpgs, export them from LR.